1. Full FM-FM technology, super small remote design. 2. Remote distance 1000M, alarm distance 1500M. 3. Folding design to protect keypad avoid miss press. 4. Anti-scratch glass lens and emerald LCD backlight. 5. Super power saved battery can last over 2 month. Enter alarm state warning function. 6. Backup battery voice siren to avoid remove system. 7. Passat, Bora, Honda window closer control. 8. Built in upgrade alarm function compatible original remote to arm/disarm the system.